IIc+ Power Supply mod.

[bieling@terra.es (Jorge Chamorro Bieling)]

I want to convert the IIc+ power supply to 220v. 
The input has a full wave rectifier that feeds a single 200v 100microF
electrolitic capacitor.

Do you think that replacing the full wave rectifier for a half wave
rectifier will do it ?

I would like to think that yes, but I really don't think so.

In fact I think that the only difference that this will make is that the
capacitor will take twice as much cycles to charge, but the voltage
across it will end up being the same as with the full wave rectifier and
the whole thing will explode or whatever...

In some switchers there are two capacitors, and the rectifier can be set
with a jumper to full wave bridge (220v) or full wave doubler (120v).
This power supply is not of this kind... 

The main problem I see here is that the voltage I need across this
capacitor is half what I get from the mains plug. (well, that is quite
obvious)

Any (clever) ideas please ? 
-- 
Jorge Chamorro Bieling